کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
764841 897007 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental Research on The Mechanism of Lift Amplification and Vibration Suppression of Lorentz Force
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Experimental Research on The Mechanism of Lift Amplification and Vibration Suppression of Lorentz Force
چکیده انگلیسی

The Lorentz force generated by electromagnetic field on the surface of the cylinder in the electrolyte solution may modify the structures of the flow boundary layer effectively. The transient control process of Lorentz force is investigated experimentally for lift amplification and vibration suppression. The experiments are conducted in a rotating annular tank filled with a low-conducting electrolyte. A cylinder with an electro-magnetic actuator is placed into the electrolyte. The lift force of cylinder is measured using the strain gages attached to a fixed beam, and the flow fields are visualized by the dye markers. The results show that the upper vortex on the cylinder is suppressed, and the wake becomes a line and leans to the lower side under the action of upside Lorentz force while the lower vortex on the cylinder is suppressed and limited in a small region. Therefore, the value of lift increases with the variation of flow field. However, the vortexes on the cylinder are suppressed fully under the action of symmetrical Lorentz force which leads to the suppression of lift oscillation and then the vibration of cylinder are suppressed fully.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Defence Technology - Volume 9, Issue 2, June 2013, Pages 85–90
نویسندگان
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